Post Json Object Data To Get Json Array Response Using Volley In Android

I need to post JSONObject (using Volley) to a web-service which is returning the response in JSONArray format. Here is what I have tried so far. final JSONObject requestJsonObjec

Solution 1:

Below helper class has fixed my problem

publicclassCustomRequestextendsJsonRequest<JSONArray> {

protectedstatic final StringPROTOCOL_CHARSET = "utf-8";
/**
 * Creates a new request.
 * @param method the HTTP method to use
 * @param url URL to fetch the JSON from
 * @param requestBody A {@link String} to post with the request. Null is allowed and
 *   indicates no parameters will be posted along with request.
 * @param listener Listener to receive the JSON response
 * @param errorListener Error listener, or null to ignore errors.
 */publicCustomRequest(int method, String url, String requestBody, Listener<JSONArray> listener, ErrorListener errorListener) {
    super(method, url, requestBody, listener, errorListener);
}

/**
 * Creates a new request.
 * @param url URL to fetch the JSON from
 * @param listener Listener to receive the JSON response
 * @param errorListener Error listener, or null to ignore errors.
 */publicCustomRequest(String url, Listener<JSONArray> listener, ErrorListener errorListener) {
    super(Method.GET, url, null, listener, errorListener);
}

/**
 * Creates a new request.
 * @param method the HTTP method to use
 * @param url URL to fetch the JSON from
 * @param listener Listener to receive the JSON response
 * @param errorListener Error listener, or null to ignore errors.
 */publicCustomRequest(int method, String url, Listener<JSONArray> listener, ErrorListener errorListener) {
    super(method, url, null, listener, errorListener);
}

/**
 * Creates a new request.
 * @param method the HTTP method to use
 * @param url URL to fetch the JSON from
 * @param jsonRequest A {@link JSONArray} to post with the request. Null is allowed and
 *   indicates no parameters will be posted along with request.
 * @param listener Listener to receive the JSON response
 * @param errorListener Error listener, or null to ignore errors.
 */publicCustomRequest(int method, String url, JSONArray jsonRequest, Listener<JSONArray> listener, ErrorListener errorListener) {
    super(method, url, (jsonRequest == null) ? null : jsonRequest.toString(), listener, errorListener);
}

/**
 * Creates a new request.
 * @param method the HTTP method to use
 * @param url URL to fetch the JSON from
 * @param jsonRequest A {@link JSONObject} to post with the request. Null is allowed and
 *   indicates no parameters will be posted along with request.
 * @param listener Listener to receive the JSON response
 * @param errorListener Error listener, or null to ignore errors.
 */publicCustomRequest(int method, String url, JSONObject jsonRequest, Listener<JSONArray> listener, ErrorListener errorListener) {
    super(method, url, (jsonRequest == null) ? null : jsonRequest.toString(), listener, errorListener);
}

/**
 * Constructor which defaults to <code>GET</code> if <code>jsonRequest</code> is
 * <code>null</code>, <code>POST</code> otherwise.
 *
 * @see #MyjsonPostRequest(int, String, JSONArray, Listener, ErrorListener)
 */publicCustomRequest(String url, JSONArray jsonRequest, Listener<JSONArray> listener, ErrorListener errorListener) {
    this(jsonRequest == null ? Method.GET : Method.POST, url, jsonRequest, listener, errorListener);
}

/**
 * Constructor which defaults to <code>GET</code> if <code>jsonRequest</code> is
 * <code>null</code>, <code>POST</code> otherwise.
 *
 * @see #MyjsonPostRequest(int, String, JSONObject, Listener, ErrorListener)
 */publicCustomRequest(String url, JSONObject jsonRequest, Listener<JSONArray> listener, ErrorListener errorListener) {
    this(jsonRequest == null ? Method.GET : Method.POST, url, jsonRequest, listener, errorListener);
}

@OverrideprotectedResponse<JSONArray> parseNetworkResponse(NetworkResponse response) {
    try {
        String jsonString = newString(response.data, HttpHeaderParser.parseCharset(response.headers));
        returnResponse.success(newJSONArray(jsonString), HttpHeaderParser.parseCacheHeaders(response));
    } catch (UnsupportedEncodingException e) {
        returnResponse.error(newParseError(e));
    } catch (JSONException je) {
        returnResponse.error(newParseError(je));
    }
}

 }

How to use this?

JSONObject requestJsonObject = newJSONObject();
    requestJsonObject.put("first_name", firstName);
    requestJsonObject.put("last_name", lastName);
    requestJsonObject.put("email_address", emailId);
    requestJsonObject.put("password", password);

    CustomRequest jsonObjReq = newCustomRequest(Method.POST, YOUR_URL, requestJsonObject, responseListener, errorListener);

Solution 2:

Looks like you are getting the json array response.

Can you change your code like this.

privateListener<JsonArray> loginResponseListener = newListener<JsonArray>() {
         @OverridepublicvoidonResponse(JsonArray resposne) {
         //other stuff goes here
        }
  };

Solution 3:

try this one

RequestQueue request = Volley.newRequestQueue(this);
JsonArrayRequest jsonArrayRequest = newJsonArrayRequest(url,newResponse.Listener<JSONArray>() 
        {

            @OverridepublicvoidonResponse(JSONArray response) 
            {
                List<Contact> result = newArrayList<Contact>();
                for (int i = 0; i < response.length(); i++) 
                {
                    try
                    {
                        result.add(convertContact(response
                                .getJSONObject(i)));
                    } 
                    catch (JSONException e)
                    {

                    }
                }
                adpt.setItemList(result);
                adpt.notifyDataSetChanged();
            }
        }, newResponse.ErrorListener() 
        {

            @OverridepublicvoidonErrorResponse(VolleyError error)
            {
                // Handle error
            }
        });

request.add(jsonArrayRequest);